Abstract: The present invention relates to an aqueous polyurethane coating composition comprising: 1) 1 to 99 wt. % of the reaction product of: a) a polyol component, which is soluble or dispersible in water and is the reaction product of a polyisocyanate component containing 50 to 100 wt. % of an aliphatic diisocyanate, a polyol component containing one or more polyether polyols and having an OH number of 25 to 350 mg KOH/g solids and an isocyanate-reactive component containing at least one group capable of salt formation; and b) polyisocyanate component, which is soluble or dispersible in water, has blocked isocyanate groups and is the reaction product of one or more polyisocyanates having an isocyanurate group content of 0 to 30 wt. %, a reversible, monofunctional blocking agent for isocyanate groups, a nonionic hydrophilic component and a stabilizing component which has 1 to 2 hydrazide groups and a molecular weight of 74 to 300 g/mol; and 2) 1 to 99 wt.

Abstract: The present invention generally relates to apparatus and methods of coating glass containers and the containers produced therefrom. In particular, embodiments of the invention provide a method of coating glass containers by at least partially drying and/or curing one or more organic coatings on a glass container using accelerated drying.

Abstract: The present invention relates to an aqueous polyurethane coating composition comprising: 1) 1 to 99 wt. % of the reaction product of: a) a polyol component, which is soluble or dispersible in water and is the reaction product of a polyisocyanate component containing 50 to 100 wt. % of an aliphatic diisocyanate, a polyol component containing one or more polyether polyols and having an OH number of 25 to 350 mg KOH/g solids and an isocyanate-reactive component containing at least one group capable of salt formation; and b) polyisocyanate component, which is soluble or dispersible in water, has blocked isocyanate groups and is the reaction product of one or more polyisocyanates having an isocyanurate group content of 2 to 30 wt. %, a reversible, monofunctional blocking agent for isocyanate groups, a nonionic hydrophilic component and a stabilizing component which has 1 to 2 hydrazide groups and a molecular weight of 70 to 300; and 2) 1 to 99 wt.

Abstract: The present invention relates to a glass hardening system and method capable of transition between configurations for annealing and tempering glass objects comprising a conveyor system, a glass object positioning system, a tempering chamber, and a plurality of temperature zones oriented to form a tunnel through which glass objects are conveyed by a conveyor system. The temperature zones can be set to implement a temperature profile for either annealing or tempering the glass objects. Furthermore, in an exemplary embodiment an annealing lehr can be configured to temper glass objects by making a portion of the conveyor system accessible to the glass object positioning system after preheating, such that the glass object positioning system can temporarily relocate the glass objects from the conveyor into a tempering chamber and then the glass objects are returned to the conveyor system.

Abstract: The present invention generally relates to apparatus and methods of coating glass containers and the containers produced therefrom. In particular, embodiments of the invention provide a method of coating glass containers by at least partially drying and/or curing one or more organic coatings on a glass container using accelerated drying.

Abstract: The invention relates to a method and apparatus for strengthening glass. A method according to one aspect of the invention strengthens glass by applying potassium ions to the surface of a glass article with the surface being at least the annealing point temperature of the glass and then keeping the temperature of the glass between the strain point temperature of the glass and about 150° C. below the strain point temperature for at least about five minutes to facilitate a more efficient ion-exchange reaction. In one embodiment, the glass articles may be dipped in a salt bath to apply the ions. In an alternative embodiment, the glass articles may be sprayed with molten potassium salt to apply the ions. As a result of the methods of the invention, the treated glass articles may be strengthened by having an increased surface stress or may contain less glass with no change in strength as compared to the same untreated glass article.